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An Artificial Interphase with Ion-Selective Pathways Enhancing Interfacial Kinetics for Highly Reversible Zinc

Aishan He1,2, Xiaoliang Zhang1,2, Xiaojie Lu1,2

  • 1Ministry of Education Key Laboratory for Advanced Textile Composite Materials, Tiangong University, Tianjin, China.

Small (Weinheim an Der Bergstrasse, Germany)
|April 7, 2026
PubMed
Summary
This summary is machine-generated.

A novel artificial interphase for aqueous zinc metal batteries (AZMBs) using carboxylated cellulose and β-cyclodextrin enhances zinc anode stability. This CCM interphase improves ion transport and suppresses dendrite growth, leading to extended battery lifespan and efficiency.

Keywords:
amorphous regionaqueous zinc metal batteriesartificial interphaseion‐selective transport

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Aqueous zinc metal batteries (AZMBs) are promising for next-generation energy storage but suffer from parasitic reactions and dendrite growth.
  • Developing stable and efficient Zn anodes is critical for advancing AZMB technology.

Purpose of the Study:

  • To engineer a novel artificial interphase for Zn anodes in AZMBs.
  • To enhance Zn ion transport kinetics and suppress detrimental side reactions.
  • To improve the overall cycling stability and lifespan of AZMBs.

Main Methods:

  • Construction of a composite interphase (CCM) using carboxylated cellulose nanofiber (CNF) and β-cyclodextrin (β-CD) on a Zn anode.
  • Characterization of the interphase structure and properties, including amorphous regions and hydroxyl group exposure.
  • Electrochemical testing of the modified Zn anode in symmetric cells (Zn||Cu) and full cells (CCM@Zn||MnO2).

Main Results:

  • The CCM interphase exhibits enhanced Zn2+ migration and ion-selective transport due to β-CD's steric hindrance and anion anchoring.
  • The interphase effectively traps water, suppresses anode corrosion, and provides mechanical support against volume changes.
  • CCM@Zn anodes demonstrated exceptional stability over 2200 h (1 mA cm-2/1 mAh cm-2) and 99.88% Coulombic efficiency over 1300 cycles (5 mA cm-2).
  • CCM@Zn||MnO2 full cells retained 78.32% capacity after 2200 cycles.

Conclusions:

  • The developed CCM interphase offers a viable strategy for interfacial engineering in AZMBs.
  • This approach significantly improves the reversibility and cycle life of Zn anodes.
  • The study provides a new pathway for developing high-performance and durable aqueous zinc metal batteries.